Stave-jointing machine



(No Model.) 2 Sheets-Shet 1.

J. WINTERBOTHAM.

STAVB JOINTING MACHINE. l No. 535,877. `Patented Mar. 19, 1895.

WEne sses InuanTnr:

(No Model.) 2 Sheets-Sheet 2.

J. WINTE-RBOTHAM. STAVB JoINTING MAGHINB.,

No. 535,877. Patented'lvm. 19, 1895..

iTED STATES PATENT rrtcn.

JOSEPH VVINTERBOTHAM,.OF J OLIET, ILLINOIS.

s'rAvE-JolNTlNc MACHINE.

SPECIFICATION forming part of Letters Patent No. 535,877, dated March19, 1895.

Application tiled March 17, 1894- Serial No. 504,007. (No model.)

To ci/,ZZ whom iv may oon-cern.-

Be it known that I, JOSEPH WINTERBOTHAM, a citizen of the United Statesof America, residing at Joliet, in the county of Will and State ofIllinois, have invented certain new and useful Improvements inStave-Jointing Machines, of which the following is a speciication,reference being had therein to the accompanying drawings, and theletters of reference thereon, forminga part of this speciiication, inwhich- Figure l is a perspective view. Fig. 2 is a vertical section ofFig. 1 taken on line l looking in the direction of the arrow and Fig. 3is a perspective view of oneof lthe adjustable stops for controlling thevibration of the stave holder frame.

This invention relatesto certain improve- 'ments in stave jointingmachines, and relates more particularly to that portion of the machineforming a gage for use in adjusting the stave in the machine so as towaste as little of the stave as possible in the operation of .jointingit.

Referring to the drawings F is the main frame of the machine, bearingthe shaft D journaled in proper boxes in the upper part of said frame.Said shaft has secured on it the fast pulley y and the loose pulley y',to which fast pulley a drive belt is applied, and said shaft has alsosecured to it a cutterrhead A carrying a series of cutting bits C, inits side for jointing the stave.

G is a vibrating frame arranged to stand at the side of the cutter headA, near its lower part, and pivotally supported at each of its lowercorners in boxes L secured to cross bar F of the main frame F in suchmanner that its upper part is free to vibrate to and from said cutterhead within the limits of adjnstable stops m secured to the main frameF.

E, E are a pair of matching curved clamp img levers pivotally connected,one to each upper corner of said vibrating frame G at t', and oppositeeach other, and having their upper ends curved toward each other anddownward so they may be simultaneously clamped down upon the ends of thestave. The opposite lower ends of said clamping levers each "for gaginga stave inthe machine.

pass through a sliding box S located centrally in frame G in a Verticalslot, and having atclamped down upon the ends of a staveto hold itfirmly in place while being jointed.

When the outer end of said foot lever T is relievedfrom pressure, theweighted inner end N of said foot lever will cause said clamping levers,and the parts connected with them to return to their first position.

0 is a post arranged to stand on cross bar F of frame F, and oppositethe center of vibrating frame G at its outer side, and is adjustablysecured to said cross bar by means of machine screws C passing throughits foot plate, and may have its upper end adjusted to or from4 thecutter head A by means of loosening some or all of said machine screws,and turning the set screws n that pass through said foot plate. Theupper end of said post O has pivotally connected to it an armPprojecting toward said cutter head, and having its outer end turned upat right angles to form a gage fora stave to rest against. Theadjustment of the post O to which it attaches being for the purpose ofsetting said gage to hold a stave at the proper place while beingjointed to save as much of the stave as possible. Said gage arrn P isconnected with arm W of rock shaft S by means of the rod R pivotallyconnected to said gage, near its pivoted inner end, and which rod passesthrough an eye Z on the side of arm W loosely. Coil springs Z aresleeved on said rod, one on either side of said eye, and in contacttherewith, and held in such contact by means of nuts turned on said rod,so as to yieldingly hold said gage P in proper position Pressure on footlever T will. through the medium of rod R cause gage P to swing down asshown in broken lines in Fig. 2, out of the way of the vibrating frame Gand stave. At the same time clamping levers E are clamped on the stave,to hold it while being jointed as IOO before stated, and when said footlever is released from pressure its Weightedend N will cause said gageto return toits first position.

H, H, are a pair of arms secured to a rock shaft J having its endsjournaled in boxes L on the inner side of vibrating frame G at about itscenter, which arms are curved at their upper ends toward the cutter headA to engage the rear edge of a stave and carry', it forward to the gageP, andhold it in contact with the stave by means of the Weighted arm Ksecured to said rock shaft J, thus forming a pair of gravity clampsagainst which the stave is placed and carried forwardby them to the gageP, and also for the purpose of giving proper alignment to the staveWhile being jointed.

B is a case for inclosing the back, and periphery ofthe cutter head, andforming a re ceptacle for the shavings which dischargeV from a spout inthe periphery ofV said case, and shown in Fig. 1.`

I n operatlionla stave is placed on the upper. faceof the,vil'iratinlgy,v frameGy s o its,A centerl will rest on the bilgedbloc,l;yo, and its ends., 011 a similar restat each endyofgthe frameun'der theclamp levers E, and vvithits` rea/r, edge iny contact withjrhe twoclampsH whichl gliv'eit the` proper alignment and carryit forwardagainst 'the gage P,`v'v'her 1by means `of; press;V ing down on thedaterend of .lfoot'leuei-T, ,the4 l two clamp levers are brought down onthe ends of the stave to hold it rmly in place, and simultaneously thegage P is caused to swing down from the stave and out of the Way of theframe G and stave, While the frame G is Oscillated forward Within thelimits of the stop m to bring the edge of the stave up to the cutterhead A to be jointed. Such oscillation of frame G. is caused by reasonof the foot lever being connected with it by means of the link V', androd V as shown in Fig. 2. The stopsm and the gage P are adjusted so asto prevent any more of the stave being planedoff and Wasted than isabsolutely necessary.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows, to wit:

In a stave jointing machine the combination of the vibrating'frameG,gravity clamps H, K, clamping levers E, E, sliding box S. carryingsaidleverr, rod`V,l1inkrV, foot lever T, N, lever YW, shaft SA, standard O,gage P,

rodR. having vthe ycoil springs and nuts Z, Z,

and the adjustable stops, m,' allarranged to operate substantially asandgfor thepurpose set forth.x

JOSEPH WINTERBOTHAM. Witnesses THQ/S,- H- HUTQmNs, HERBERT COWELP'

